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AM. PHOTO-LITRO. CD. N.Y. (OSBDRNE'S PROCESS.)

@with tetta stmt ffice` IMPROVEMENT IN BURGLAR AND FIRE-PROOF SAFES.

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TO ALL WHOM IT MAY CONCERN:4

Beit known 'that I, L. H. MILLER, oi the city and county of Baltimore,State of Maryland, have invented a. new and useful Improvement in Fireand Burglar-Proof Safes; and I do hereby declare that the following isa'full, clean-and exact description thereof, reference being had to theaccompanying drawings, making a purt of this specification, in which-Figure .1 is a view of the back or inside part of a safe-door anddoor-frame, with the inside plate removed from the door.

Figure 2 is'a, vertical cross-section through the door-frame, showingthe recesses therein for receiving the bolts.

Figure 3 is a section through the-door and its frame taken in the plane:c 2:.

Figure 4 isl a perspective view, show-ing the recesses in -thedoor-frame for receiving the bolts.

Similar letters of reference indicarecorresponding parts in the severaliglxres.

This invention and improvement in re-proof safes is designed to renderit impossible to successfully open a safe by the use of gunpowdcr, by soconstructing the bolts and applying them to the safe-door that thereshall not be lspaces left about the bolts or locks for receivingIgunpowder. as will be hereinafter described.

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

In the accompanying drawings, A represents the doorfra|ne, and -B thehinged door of a. fire-'proof safe of Aany of the well-known forms ofconstruction. C represents the lock-frame or box containing the lockmechanism; and C represents an arm, which projects from the lock-frame,and which receives a vibrating movement.

for locking and unlocking the safe-door, A short stud, a, which projectsfrom the arm C', enters an oblong slot,

which is made through an arm, D, projecting at right angles lfrom aplate, E, which is confined between the face-platel B of the door B andan innerv lining, F, as shownin tig. 1.' The plate E is arranged toslide freely in a. plane parallel to the face B of thedoor, controlledof course by the lock mechanism in the case C, and

from the outer face of this plate the two locking bolts b b project, andpass through oblong slots which are made through the face I3 ofthe'door. The plate E, upon which the bolts 6 are formed, serves as ameans for closing the slots through which these bolts pass, and also asa'means of strengthening the bolts and, moving them in a-plane parallelto the surface of the door, from whichthey project. By this arrangementand constructio'n o f bolts it will be seen that the entire space withinthe door-plates can be Jfilled, as indicated by the red linesin iigs.and 3, thus leaving no vacant space behind the bolts in which powder oranything could be introduced for blowing open the safedoor. In the innerface of the doorf`rame A recesses g g, of an L-shape,

are formed for receiving and holding the bolts b b, as indicated in redin iig. 2. These L-shaped recesses are arranged so us to allow the boltsto freely enter and leave their horizontal portions when the door isunlocked and swung open and closed. W'hen the door isclosed andunlocked, the bolts will lie in said horizontal portions of the L slots,so that by manipulating the. lock so as to more the bolts b b downward,these bolts will cuter the vertical portions of said slots, as shown inred in iig. 2, and secure the door fast.

I do not desire to 'confine this invention to any particularconstruction of lock mechanism, as any of the, well-known check locksmay be employed by a slightA modilication which will admit of a slidingmovement being communicated to the bolt-carrying plate E, or itsequivalent. In the application to {ire-proof safes of that class oflocking-bolts which slide at right angles to that face of the door towhich they are applied, spaces must necessarily be left at' both ends ofthese bolt-s to allow of their being shot back and forth into and out ofthe recesses which are formed in the door-frame. I avoid the necessityfor leaving spaces, as above explained, by securing, to or forming on a.closing-plate or guard the bolts b b, and arranging such bolts so'thatthey can only be moved in a plane parallel to that face of the door fromwhich they project, employing, in conjunction therewith, the L-shapedslots, or their equivalents, `for receiving these bolts, as aboveexplained.

Having described my invention, -what I claim as new, and desire tosecure by Letters Patent, is y 1. Soarranging the bolts or fastenings ofa fire-proof safe-door, as to avoid spaces or chambers about the bolts or lock in which powder or other explosive substance might be used toopen the safe, said object being eifected by means substantially asdescribed.

2. Applying the bolts Iz b to a sliding guard-plate, E, whichis'enclosed within the safe-door, so as to move in a plane parallel, ornearly so, to the plane of that face of the door from which the saidbolts project, in combination with the slots g in the door-frame,substantially as described.

L. H. MILLER,

Witnesses:

ALLEN E. FonREs'raR, WM. D. MILLER. Jr.

